Photosynthesis

Question 1

Which molecule is in the reaction center of photosystem 680

Answer 1

Chlorophyll A

Question 2

What does CO2 combine with during photosynthesis (Calvin cycle)

Answer 2

RuBP

Question 3

What is photophosphorylation

Answer 3

synthesis of ATP using light energy

Question 4

What is the product of the reduction phase of the Calvin Cycle

Answer 4

G3P

Question 5

the antenna complex is composed of___ and ___

Answer 5

chlorophyll and accessory pigments

Question 6

PS2 is also called P680 because

Answer 6

it best absorbs light with a wavelength of 680nm

Question 7

Main parts of photosynthesis

Answer 7

Light reaction (PS1 and PS2), dark Reaction (Calvin cycle)

Question 8

main difference between chlorophyll a and b: stucutre

Answer 8

Chlorophyll A: CH3
Chlorophyll B: Carboxyl group

Question 9

light energy absorbed by P700 (PS1) energizes electrons to___

Answer 9

form NADPH

Question 10

2 parts of chlorophyll

Answer 10

Phytol tail (Hydrophobic)
Porphyrin Ring (Hydrophilic)

Question 11

In PS2, photons excite electrons that came from____

Answer 11

chlorphyll

Question 12

In PS2, the electrons from chlorophyll are captured by a _____

Answer 12

primary electron acceptor

Question 13

what does enzyme Z split water into?

Answer 13

electrons, O2, and H+

Question 14

where do the remains of water go?

Answer 14

O2: Waste
H+: increase concentration in the lumen to eventually make ATP
electrons: replace the electrons lost in chlorophyll P680

Question 15

as electrons move from one acceptor to the next, they power _____

Answer 15

H+ pumps

Question 16

what do H+ pumps do? (SPECIFIC)

Answer 16

moves H+ ions against the concentration gradient from the stroma to the lumen.

Question 17

how do H+ ions in the lumen make ATP?

Answer 17

goes through ATP synthase and makes ATP through photophosphorylation

Question 18

why is photophosphorylation not the same as oxidative phosphorylation?

Answer 18

electrons are being removed from oxygen instead of added into oxygen. The initial energy came fromlight instead of glucose

Question 19

where does the dark reaction (Calvin cycle) occur

Answer 19

stroma

Question 20

what is a stack of thylakoids called

Answer 20

grana

Question 21

what is the objective of photosynthesis

Answer 21

to convert solar energy into chemical energy

Question 22

what are the three parts of the calvin cycle

Answer 22

1. carbon fixation
2. reduction
3. RuBP Regeneration

Question 23

the Calvin cycle makes what product (as seen from glycolysis)

Answer 23

G3P

Question 24

G3P produced in the Calvin cycle can do one of two things. these are:

Answer 24

1. make glucose
2. continue calvin cycle to make RuBP

Question 25

what does the polarity of pigments dictate?

Answer 25

their position in the photosystems

Question 26

what is chlorophyll B?

Answer 26

an accessory pigment that is in the antenna complex

Question 27

what happens after light energy is absorbed by PS2 in the thylakoid

Answer 27

enzyme Z splits water into electrons, H+ (protons), and O2